<template>
  <div class="register">
    <el-form
      :model="ruleForm"
      status-icon
      :rules="rules"
      ref="ruleForm"
      label-width="100px"
      class="demo-ruleForm"
    >
      <el-form-item
        label="用户名"
        prop="name"
      >
        <el-input
          type="text"
          v-model="ruleForm.name"
          autocomplete="off"
        ></el-input>
      </el-form-item>
      <el-form-item
        label="密码"
        prop="pass"
      >
        <el-input
          type="password"
          v-model="ruleForm.pass"
          autocomplete="off"
        ></el-input>
      </el-form-item>
      <el-form-item
        label="确认密码"
        prop="checkPass"
      >
        <el-input
          type="password"
          v-model="ruleForm.checkPass"
          autocomplete="off"
        ></el-input>
      </el-form-item>
      <el-form-item
        label="年龄"
        prop="age"
      >
        <el-input v-model.number="ruleForm.age"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button
          type="primary"
          @click="submitForm('ruleForm')"
        >提交</el-button>
        <el-button @click="resetForm('ruleForm')">重置</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>
<script>
export default {
  data () {
    var checkAge = (rule, value, callback) => {
      if (!value) {
        return callback(new Error('年龄不能为空'))
      }
      setTimeout(() => {
        if (!Number.isInteger(value)) {
          callback(new Error('请输入数字值'))
        } else {
          if (value < 18) {
            callback(new Error('必须年满18岁'))
          } else {
            callback()
          }
        }
      }, 1000)
    }
    var validatePass = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请输入密码'))
      } else {
        if (this.ruleForm.checkPass !== '') {
          this.$refs.ruleForm.validateField('checkPass')
        }
        callback()
      }
    }
    var validatePass2 = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('请再次输入密码'))
      } else if (value !== this.ruleForm.pass) {
        callback(new Error('两次输入密码不一致!'))
      } else {
        callback()
      }
    }
    return {
      ruleForm: {
        name: '',
        pass: '',
        checkPass: '',
        age: ''
      },
      rules: {
        name: [{ required: true, message: '用户名不能为空', trigger: 'blur' }],
        pass: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { validator: validatePass, trigger: 'blur' }
        ],
        checkPass: [
          { required: true, message: '请再次输入密码', trigger: 'blur' },
          { validator: validatePass2, trigger: 'blur' }
        ],
        age: [
          { required: true, message: '请填写年龄', trigger: 'blur' },
          { validator: checkAge, trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    submitForm (formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          alert('submit!')
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    resetForm (formName) {
      this.$refs[formName].resetFields()
    }
  }
}
</script>
<style lang="scss">
.demo-ruleForm {
  max-width: 500px;
  margin: 0 auto;
}
</style>
